<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片试图区域 -->
    <el-card>

      <!-- 行区域 -->
      <!-- 搜索框-添加按钮 -->
      <el-row :gutter="20">
          <el-col :span="8">
              <el-input el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
              </el-input>
            </el-col>
          <el-col :span="6">
            <el-button type="primary" @click="addDialogVisble = true">添加用户</el-button>
          </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template v-slot="scope">
            <!-- {{ scope.row }} -->
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- {{ res.scope }} -->
            <!-- 修改按钮 -->
            <el-tooltip class="item" effect="dark" content="修改" placement="top" :enterable="false" >
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            </el-tooltip>
            
            <!-- 删除按钮 -->
            <el-tooltip class="item" effect="dark" content="删除" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="renoveUserById(scope.row.id)"></el-button>
            </el-tooltip>
            
            <!-- 分配角色按钮 -->
            <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[5, 10, 15, 20]"
      :page-size="queryInfo.pagesize"
      layout="sizes, prev, pager, next, jumper"
      :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisble" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <!-- 用户名 -->
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
      
        <!-- 密码 -->
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        
        <!-- 邮箱 -->
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        
        <!-- 手机 -->
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisble = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editFrom" :rules="editFromRules" ref="editFromRef" label-width="100px">
        <el-form-item label="用户名">
          <el-input v-model="editFrom.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editFrom.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editFrom.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="editUserInfo">确定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="30%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户： {{ userInfo.username }}</p>
        <p>当前的用户： {{ userInfo.role_name }}</p>
        <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option
                v-for="item in roleList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail =/^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
      if(regEmail.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号码的正则表达式
    var checkMobile = (rule, value, cb) => {
      // 正则表达式
      const regMobile = /^(?:(?:\+|00)86)?1(?:(?:3[\d])|(?:4[5-79])|(?:5[0-35-9])|(?:6[5-7])|(?:7[0-8])|(?:8[\d])|(?:9[1589]))\d{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      // 控制添加添加用户对话框的显示与隐藏
      addDialogVisble: false,
      // 添加用户的表单数据
      addForm: {
        // 用户名
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      // 添加表单验证规则对象
      addFormRules: {
        username: [
        { required: true, message: '请输入用户名', trigger: 'blur' },
        { min: 3, max: 10, message: '用户名长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
        { required: true, message: '请输入用户密码', trigger: 'blur' },
        { min: 6, max: 15, message: '用户密码长度在6~15个字符之间', trigger: 'blur' }
        ],
        email: [
        { required: true, message: '请输入用户邮箱', trigger: 'blur' },
        { validator:checkEmail, trigger:'blur' }
        ],
        mobile: [
        { required: true, message: '请输入用户手机', trigger: 'blur' },
        { validator:checkMobile, trigger: 'blur' }
        ]
      },
      // 修改用户对话框显示与隐藏
      editDialogVisible: false,
      // 查询到用户私有信息对象
      editFrom: {},
      // 修改表单验证规则对象
      editFromRules: {
        email: [
        { required: true, message: '请输入用户邮箱', trigger: 'blur' },
        { validator:checkEmail, trigger:'blur' }
        ],
        mobile: [
        { required: true, message: '请输入用户手机', trigger: 'blur' },
        { validator:checkMobile, trigger: 'blur' }
        ]
      },
      // 显示与关闭分配角色对话框
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo:{},
      // 所有角色的数据列表
      roleList: [],
      // 已经选中的id值
      selectedRoleId:''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data : res } = await this.$http.get('users',{params: this.queryInfo})
      if(res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res);
    },
    // 监听pagesize改变事件
    handleSizeChange(newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage);
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关的状态变化
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const {data : res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if(res.meta.status !== 200){
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户数据列表失败！')
      }
      this.$message.success('更新用户状态成功')
    },
    // 监听添加用户对话框关闭事件
    async addDialogClosed() {
      await this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid);
        if(!valid) return
        // 检验通过表示可以发起添加用户网络请求
        const {data: res} = await this.$http.post ('users', this.addForm)
        if(res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }

        this.$message.success('添加用户成功')
        //添加成功之后隐藏添加用户对话框
        this.addDialogVisble = false
        // 重新获取用户列表
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      console.log(id);
      const {data : res} = await this.$http.get('users/' + id)
      if( res.meta.status !== 200) return this.$message.error('修改用户信息失败！')
      this.editFrom = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    async editDialogClosed() {
      await this.$refs.editFromRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFromRef.validate( async valid => {
        // console.log(valid);
        if(!valid) return this.$message.error('修改用户失败！')
        // 校验通过表示可以发起修改用户网络请求
        const {data : res} = await this.$http.put('users/' + this.editFrom.id, {
          email: this.editFrom.email,
          mobile: this.editFrom.mobile
        })
        
        if(res.meta.status !== 200) {
          return this.$message.error('修改用户信息失败')
        }
        // 提示用户信息修改成功
        this.$message.success('修改用户信息成功')
        // 修改成功之后隐藏修改用户对话框
        this.editDialogVisible = false
        // 重新获取用户列表
        this.getUserList()
      })
    },
    // 根据id删除对应用户
    async renoveUserById(id) {
      console.log(id);
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        // 如果用户确认删除，则返回值为confirm
        // 如果用户取消了删除，则返回值我字符串 cancel
        // console.log(confirmResult);
        if(confirmResult !== 'confirm') {
          return this.$message.info('用户取消了删除')
        }
      // console.log('确认删除');
      const {data : res} = await this.$http.delete('users/' + id)

      if(res.meta.status !== 200) {
        return this.$message.error('删除用户是失败')
      }
      this.$message.success('删除用户成功')
      // 删除成功后重新获取用户列表
      this.getUserList()
    },
    // 显示与隐藏分配角色对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 获取所有用户角色信息
      const { data: res } = await this.$http.get('roles')
      if(res.meta.status !== 200) return this.$message.error('获取分配角色列表失败！')
      // this.$message.success('获取分配角色列表成功')
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击确定分配角色
    async saveRoleInfo() {
      if(!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }

      const { data:res } = await this.$http.put(`users/${this.userInfo.id}/role`,
      { rid:this.selectedRoleId })
      if(res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 添加分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }

  }
}
</script>

<style lang="less" scoped>
  // .btnspan{
  //   margin-left: 30px !important;
  // }
</style>